Thomas thompson ponsonby



. `correct ydescription thereof:

@anni dtylyira THOMAS rHoMPsoNroNsoNBY, or NOTTINGHAM, ENGLAND;

l tetta-s Patent N0.`1o7,71sv, 1aed september 27, 1870,

' IMPRQVEMENT iNIMAcHlNEs `Fou QRNAMENTING THE sum-'Ace oF woon, ae.

provementin Ornamenting -the Surface of Wood and other materials; `andthefollowing is declared to be a Before mypresent `inve'nt ion machinery had been made for ornamentingtlie surface of veueer's;a'ud ar- "ticles of wood, pa )eI-"or other` materials, by a pat- -teru or desigll'z' In the mechanism* that has `heretoforebeen einployed for this purpose, diflieultyhas beeuiexpe-v rienced `iii-obtaining asutfieiently high aud uuifrm temperature to insure accuraeyand uniformity in thevv operation, and to give theattendant the power of iustantly relievmg the pressure, so as to prevent a repel 'tition ofthe design or pattern bythe revolution of th cylinder, and also to` insure uniformity of pressurartgardless ot'the thickness of the material.

In i, my present Ainvention these diculties vare over-r.

j ,come, and this is eifectedby employing. melted lead,

or other metal, circulating through andlheating the "eyhnder,` sodas to obtain a ,high uniform temperature;

and a surrounding casing isfused above the said cylinder, also, to retain heat and rendeljthe' temperature unifornnf -The pressure" of the materiallpnthe or Upontheprqjecting end otfthe'l mandrel orshaft o fris the hollow;cylinder-"el thesurface of which is tolle' engraved Vwith the pattermmdsign to be burned 'or -charred'intdu-he wood or other material vtobfeornarne'uted.,` p

i 7 The open en'd' the cylinder a sets around a disk, f, that issustained 'by a shaft, y, in heads h, and the edge of thecylindere and disk f are to "beground together, so'as tofform atight joint, but allowthe cyl- Ainder to be revolved. j

The cylinder e is heated by a stream `of melted lead e lef, heated sufficient-ly to char orf b urn thesurfaee of the wood, and produce the corresponding design pr picture thereon.

\ l The Schedule referred ton these'Letters APatentaud making' part of-the same or otller metal, flowing'in through the pipe l, from n any suitable meltingpot, ina furnace, and the metal lows olf-by the pipe3, and is returned to the melt-y ing-pot by any suitablelevating apparatus.

`Thr/'case or bonnet m is made to eover the upper partof the roller o, and is hollow, so that the melted `metal can flow into and through the same from the pipe 1,'and then pass out, and go, by the pipe l', into the hollow roller or cylinder c. v

The roller la, that is used to press the paper, wood,

Vor otherrnaterial up -to the cylinder e, is mounted upona shaft, m', that is set to slide at its ends `in t-he gudes; and therods n connect the shaft m with the foot-treadle p, thatis set to swinglupon a-fl'ileru-rn, 6, and the rear part of s'aid treadlep extends to form a lever for the weight q,vthat is movable, so that it can be positioned to -gLve the pressurefnecessary to force th'eroller and material to be ornainented into Contact with the heated cylinder aand thereby cause 4 the surface to be charred by the relief engraving upon such' cylinder. 4

By this apparatus the engraving can be transferred -very perfectly, and 1the heat is under the control of l the attendant, and also the pressure` that forces the wood to the cylinder. d I claim as my inventionf1; 'lfliehollow engraved vcylinder e, mounted -upon v `the mandrel or shaft o, at one` end, and supported at lfthe-other end bythe stationary disk f, substantially as setv fortluso, that the tubes for introducing the heatto the` cylin'dermay pass through said disk, substantially as set forth; y

2. Thehollow engraved cylinder, hearted by a stream of melted metal flowing through the same, in combi- .nation with mechanism for pressing the surface of 4. The arrangement of the weighted lever and treadle p, to press the roller k and material to be'ror namented to the cylinder e, `substantially as specified.

Signed this 31st day of August, A41). 1870.

' THOMAS T. PONSONBY. Witnesses: f

GHAs. HSMLTH, Gao. T. PINCKNEY.

wood lor other materialto thc said cylinder, for the purposes and substantially as set forth'. r. '3."'Ih'e case'surrounding the upper portion of the cylinder e,and heated by a stream vof melted metal' 'flowing through the same, in combina-tion with the engraved"` cylinder @as andfor the purposes set forth. 

